Iam a new user and forum useri bought a canon 1100d single lens kitbut also come across another lens EF 75-300mm 1:4-5.6 III so i bought it $60.00 AUhavnt taking many photos due to a recant accident at work and then having to have spine operationmy sport was speedway racing no longer can do thisso iam hoping to get inspired to take photos at the race trackas for settings and shutters speeds i havnt a clueany tips would be great